أَحسَنُthe best ماwhat فيin صالِحٍSalih وَجهُهُhis face
أَحسَنُ ما في صالِحٍ وَجهُهُ
فَقِسso judge by analogy عَلىconcerning الغائِبِthe unseen بِالشاهِدِby the seen
فَقِس عَلى الغائِبِ بِالشاهِدِ
The best thing about Salih is his face;
The fairest trait of Saleh's face
so judge the unseen by the seen.
Judge the absent by the one present
تَأَمَّلَتstudied عَينيmy eye لَهُbelonging to him خِلقَةًan appearance
تَأَمَّلَت عَيني لَهُ خِلقَةً
تَدعوcalls إِلىfor تَزنِيَةِaccusing of fornication الوالِدِthe father
تَدعو إِلى تَزنِيَةِ الوالِدِ
My eye studied his appearance,
My eyes surveyed in him a nature
which invites a charge of fornication against his father.
That summons to resemble the father
Sol 6.1